1. Why was it necessary to add 20% NaOH to the brominated acetanilide solution prior to TLC analysis? What was the purpose of adding the ethyl acetate to the solution?

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.